Update README.md

Author: mkawserm

README.md

@@ -21,6 +21,7 @@ Qb supported platform
 | ------------- | ------------- |
 | Windows  | Window7+  |
 | MacOS | OS X El Capitan 10.11+  |
+| Ubuntu  | Ubuntu 18.04+ |
 | Linux  | Ubuntu 16.04+ or Similar  |
 | Android  | 4.4+(armv7) and 5.0+(armv8  |
 | Raspberry Pi  | Raspbian Stretch  |